Description:The hard seal butterfly valve adopts three-eccentric valve seal structure, which ensures the reliability of the butterfly valve. The valve seat and dischas almost no wear and has the tight seal function. Sealing ring chooses stainless steel with metal hard seal and elastic seal advantages. Whetherin low temperature or high temperature circumstances, this hard seal butterfly valve still has excellent seal performance.The metal hard sealingbutterfly valve is typically applied to power station heating system, FCC mainair blower piping system, cutting off industrial pipelines of steel, metallurgy,chemical, etc. Customers can choose manual or electrical driving mode to operate the valve. We put each hard seal butterfly valve into a bubble bag and then use wooden cases for the outer packaging